A transformer is a static machine utilized for changing force starting with one circuit then onto the next without evolving recurrence. This is an exceptionally fundamental meaning of transformer.
The historical backdrop of transformer was started in the year 1880. In the year 1950, 400KV electrical force transformer was presented in high voltage electrical force framework. In the mid 1970s, unit rating as expansive as 1100MVA was delivered and 800KV and considerably higher KV class transformers were produced in year of 1980.